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How to replace an Oxygen Sensor in an ISC M40Step 1: - Open up the ISC M40The ISC M40, uses high quality, machine thread screws for the cover. Once you have removed all of the screws, use caution wh … read more

This is a question we get a lot, and I'm going to give the best answer I can think of:Because it sells calibration gas.The given theory is that setting a monitor to a Pentane curve makes it decently s … read more